DYNAMIC ECOSYSTEMS

PREPARED BY:

MAISARAH BINTI ISMAILM20111000331

UPSI

What do you observe in the pictures?

Mangrove Ecosystem Ocean Ecosystem Desert Ecosystem

DYNAMIC ECOSYSTEMS

What is an ecosystem?Ecosystem is a system formed by the interaction of living organisms with one another and with their environment.

ECOSYSTEM

ABIOTIC

BIOTIC

pH value

TemperatureLight

intensityHumidity

Topography

Microclimate

Decomposers

Consumers

Producers

DYNAMIC ECOSYSTEMS

ECOSYSTEM

Abiotic components The non- living components in the ecosystem

such as air, water, soil, temperature and light

intensity. Biotic components The living components in the ecosystem

such as plants and animals.

ABIOTIC COMPONENTS OF AN ECOSYSTEM

pH

Most organism live in natural and nearly neutral environmental (pH 6 – pH 7.5).

Some plants, like maize, grows well in an acidic condition while coconuts grow well in alkaline condition.

Temperature

Effect on biochemical reaction in the organism.

Organism can live within certain range of temperature.

Poikilotherms – are animal that cannot control their body temperature.

Homoiotherms – are animal that able to maintain their body temperature.

Light Intensity

Effect the rate of photosynthesis.The distribution of green plants will be more

extensive in the area eith higher light intensity.

Humidity

Organism that can control the rate of water loss have and extensive distribution.

Organism such as frogs, snails, earthworm and moss cannot control the rate of water loss and more suited to live in damp places.

Topography

Altitude – There are less organism at high altitude because of temperature, humidity and air pressure are low.

Gradient / Slope

Microclimate

Microclimate refers to the climate of specific region in an habitat.

Microclimate includes light intensity, amount of rainfall, temperature changes and humidity of a microhabitat.

BIOTIC COMPONENTS OF AN ECOSYSTEM

Producers

A basis producer to the primary consumers such as plants.

Consumers

An organism that feed on plants or other organism.Consumers divide into : primary consumers – herbivors that feed on plants

directly. Secondary consumers – carnivores that feed on

primary consumers directly.

Tertiary consumers – carnivores or omnivores that feed on secondary consumer.

ECOSYSTEMS - VIDEO

Discussion Session

DYNAMIC ECOSYSTEMS